Reset move gizmo to object face or geometry
Its quite easy if you are using the latest blender versions. After you have rotated your object and applied the rotation, simply go to &quot;Options&quot; and select Affect only - origin.

Now you can simply rotate your Origin using either the Rotation tool or Rotation Shortcut &quot;R&quot;. 
After you are done rotating the origin you can exit the Affect only - Origin mode.
Note : You can not only rotate the origin, but also can Move the origin and also use Snap features.